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» A framework for selective query expansion
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ICASSP
2008
IEEE
14 years 3 months ago
Joint dynamic resource allocation and waveform adaptation in cognitive radio networks
This paper discusses the issue of dynamic resource allocation (DRA) in the context of cognitive radio (CR) networks. We present a general framework adopting generalized transmitte...
Zhi Tian, Geert Leus, Vincenzo Lottici
ECIR
2007
Springer
13 years 10 months ago
A Decision-Theoretic Model for Decentralised Query Routing in Hierarchical Peer-to-Peer Networks
Abstract. Efficient and effective routing of content-based queries is an emerging problem in peer-to-peer networks, and can be seen as an extension of the traditional “resource ...
Henrik Nottelmann, Norbert Fuhr
WWW
2003
ACM
14 years 9 months ago
Improving pseudo-relevance feedback in web information retrieval using web page segmentation
In contrast to traditional document retrieval, a web page as a whole is not a good information unit to search because it often contains multiple topics and a lot of irrelevant inf...
Shipeng Yu, Deng Cai, Ji-Rong Wen, Wei-Ying Ma
CIKM
2010
Springer
13 years 7 months ago
On the selectivity of multidimensional routing indices
Recently, the problem of efficiently supporting advanced query operators, such as nearest neighbor or range queries, over multidimensional data in widely distributed environments...
Christos Doulkeridis, Akrivi Vlachou, Kjetil N&osl...
SIGMOD
2002
ACM
145views Database» more  SIGMOD 2002»
14 years 8 months ago
Continuously adaptive continuous queries over streams
We present a continuously adaptive, continuous query (CACQ) implementation based on the eddy query processing framework. We show that our design provides significant performance b...
Samuel Madden, Mehul A. Shah, Joseph M. Hellerstei...